#!/usr/bin/env python

 # -*- coding: utf- -*-

 import socket

 import select

 class MyRequest:

     """

     从请求头请求体获取的信息封装的request对象中

     """

     def __init__(self,data):

         header_body=data.decode('utf-8')

         header_str,body_str=header_body.split('\r\n\r\n')

         header_list=header_str.split('\r\n')

         method,url,protocal=header_list[].split(' ')

         header_dict={}

         for i in range(,len(header_list)):

             k,v =header_list[i].split(':',)

             header_dict[k]=v

         self.method=method

         self.url=url

         self.headers=header_dict

 class MyResponse:

     """

     处理服务端要返回给浏览器的数据，相当于HTTPResponse或render

     """

     def __init__(self,data):

         self.data=data

         self.base_data='HTTP/1.1 200 OK\r\n\r\n<html><head><meta charset="UTF-8"></head><body><h1>{0}</h1></body></html>'

     def myrender(self):

         return self.base_data.format(self.data).encode('utf-8')

 #  下面2个简单的视图函数

 def index(request):

     return MyResponse('index page').myrender()

 def login(request):

     return MyResponse('login page').myrender()

 #  路由系统

 routers=[

     ['/index',index],

     ['/login',login],

 ]

 sk=socket.socket()

 sk.setblocking(False)

 sk.bind(('127.0.0.1',))

 sk.listen()

 inputs=[sk,]   #  套接字接听对象，是socket或conn的一个或多个

 while True:

     rList,wList,eList=select.select(inputs,[],[],)

     #  读，写，错误  3个列表

     for server in rList:

         if server==sk:

             conn,addr=sk.accept()

             inputs.append(conn)

         else:

             header_body_bytes=server.recv()

             request=MyRequest(header_body_bytes)

             view_method=None

             for view_function in routers:

                 #  根据请求url通过路由交给不同的视乎函数处理

                 if request.url == view_function[]:

                     view_method=view_function[]

                     break

             if not view_method:

                 response=MyResponse('').myrender()

             else:

                 response=view_method(request)

             server.sendall(response)

             inputs.remove(server)

             server.close()

#!/usr/bin/env python

# -*- coding: utf-8 -*-

from wsgiref.simple_server import make_server

#  下面2个视图函数

def indexfunc(request):

    f=open(r'templates/index.html','rb')

    data=f.read()

    f.close()

    print('执行了indexfunc')

    return [data]

def loginfunc(request):

    request_method=request.get('REQUEST_METHOD')

    if request_method=='GET':

        f = open(r'templates/login.html', 'rb')

        data = f.read()

        f.close()

        print('执行了login')

        return [data]

#  路由

routers=[

    ('/index',indexfunc),

    ('/login',loginfunc),

         ]

drouters=dict(routers)

def application(environ,start_response):

    start_response('200 ok',[('Content-Type','text/html')])

    path=environ.get('PATH_INFO')

    print(path)

    if drouters.get(path):

        print('yeah')

        return drouters.get(path)(environ)

    else:

        return [b'<h1>404<h1>']

t=make_server('127.0.0.1',8989,application)

t.serve_forever()